Adjustable lamp-holder



(No Model A. P. 85 J. S. LENT.

ADJUSTABLE LAMP HOLDER.

Patented Sept. 11, 1888.

NITE STATES ATENT Grates.

ALVAH F. LENT AND JAMES SPENCER LENT, OF SING SING, NEW YORK.

ADJUSTABLE LAM P-HOLDER.

SPECIFICATION forming part of Letters Patent No. 389,308, dated September 11, 1888.

Application tiled September 29, 1887. Serial No. 251.021. (No model.)

To all whom, it may concern.-

Be it known that we, ALVAH F. LENL and J AMES SPENCER LENT, citizens of the United States, both residing at Sing Sing, in the county of VVestchester and State of New York, have invented a new and useful Lamp-Holder, of which the following is a specification.

Our invention relates to an adjustable lampholder, the especial purpose of which is to a]- Ic low of the proximity ofa lamp to sewing-ma tached to the arm E of a sewing-machine by jaws O B, the upper jaw, 0, being movable and working in a toothed ratchet-rack, b, on the inner side of the socket 13, this ratchet being cast on and forming a part of the socket B, and the jaw being firmly held and regulated by a thumb-screw, D, passing through both jaws.

Fig. 2 is an end view of our adjustable holder, showing the bracket A with the pin b inserted in the socket 13.

Fig. 3 is a top view of the movable jaw (J, resting upon the toothed ratchet-rack b of the socket B and held in place by the thumbscrew D. The center I) of one end of the jaw O is 5 rounded off upon the upper side, leaving a flange on each edgc,and theteeth of the ratchet-- rack bare made to fit between the above-1nentioned flanges, thus preventing any lateral motion of the jaw C.

Fig. lisa side view of our adjustable holder, showing a portion of the bracket A with the pin b inserted in the socket B, and aportion of the jaws O B and the thumb screw D. The pin 1) may be made with a spring, a, to facilitate its removal, and yet keep it steady in the socket.

In using our adjustable lampholder as applied to the arm of any sewingmachine, the pin Z) of the bracket A is inserted in the socket B, and the jaws C B are passed over and under the arm E of the sewing-machine, the jaw C at one end fitting and resting upon the toothed ratchetrack b on the inner side of the socket B, and the thumb screw I) turned down to the requisite position.

\Vhat we claim as our invention, and desire to protect by Letters Patent, is-

In an adjustable lamp-holder, a clamp consisting of a socket-piece having a ratchet-rack on itsinnerside and ajaw fixed thereto, in combination with a movablejaw adapted at one end to be adjustably supported upon the rack, and a thumb-screw passing through both jaws for securing them together and to the object desired, substantially as described.

ALVAH F. LEN'P. JAMES SPENCER LENT.

\Vit ncsscs:

WM. H. RODGERS, J AMES M. BALL. 

